Signature PDF turns the print, sign, scan, email routine into a browser tab: upload a contract, place your signature on the page, and send the finished document back without paper ever entering the loop. Sign alone in seconds, or share a link and let partners, clients, and colleagues add their signatures to the same document in turn. Draw your signature with the mouse or trackpad, type it in a handwriting style, or stamp a scanned image of your handwriting onto any page. Drop the signature exactly where it belongs, resize it, and apply it across selected pages before downloading the signed file. Organize mode lays every page out as thumbnails you can reorder, rotate, delete, extract, and merge with pages from other PDFs. The metadata editor rewrites title, author, and custom fields, and compression shrinks bulky scans to a size email can carry. For shared signing, PDFs rest on the server only for the retention window you choose, and optional storage encryption keeps their contents unreadable to anyone missing the key. Where cryptographic proof is required, certificate-backed digital signing proves who signed and exposes any later edit to the file. A built-in demo document lets anyone test the full flow first, and the translated interface serves signers in many languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. AGPL-3.0 licensed.